2-Assume a program requires the execution of 80106FP instructions, 110 106INT instructions, 80106L/S instructions, and 16106 branch instructions. The CPI for each type of instruction is 1, 3, 4, and 2, respectively. Assume that the processor has a 4GHz clock rate. A. By how much must we improve the CPI of FP instructions if we want the program to run three times faster? B. By how much must we improve the CPI of L/S instructions if we want the program to run two times faster? C. By how much is the execution time of the program improved if the CPI of INT and FP instructions is reduced by 20% and the CPI of L/S and Branch is reduced by 40%